Objective: In order to sum up the teaching experience and improve the teaching quality.Methods: The human anatomy final examination papers for the students of 2007 majoring in clinical medicine were analysed.Results: The averaged 83.87,showed an appropriate degree of difficulty and discrimination of the examination paper and reasonable scores with negative skew distribution.Conclusions: This analysis as an objective index can be used to evaluate the response of teaching in human anatomy as well as improve the quality of test paper.

Objective To study the therapeutic effect of mobilization of autologous bone marrow stem cells by G-CSF on myocardial infarction in experimental rats. Methods Rat model were established by coronary ligation. Rat bone marrow stem cells were mobilized by G-CSF. The volume of CD34~+ cells in peripheral blood was examined 1 week after myocardial infarction by flow cytometry. The infiltration of CD34~+ cells in the infarct zones were detected by immunohistochemical methods. At 4 weeks after infarction, the size of the infarction area, capillary density and cardiac function were evaluated by means of HE and immunohistochemisty staining as well as hemodynamic measurements. Results After 1 week, the level of CD34~+ cells in the G-CSF group increased significantly compared with the control group and infiltration of CD34~+ monocytes were found in the junctional zones in the G-CSF group. After 4 weeks, the size of the infarction area was minimized in the treatment group. More angiogenesis and better cardiac function were found in the G-CSF group compared with the control group. Conclusion The therapy of mobilization of autologous bone marrow stem cells by G-CSF is effective in treatment of myocardial infarction in rat models.

OBJECTIVE:To explore the differences of plasma concentration of norvancomycin by HPLC and microbiological method. METHODS:Microbiological method and HPLC were used to detect the plasma concentration of norvancomycin,and clinical test result of both techniques was retrospectively analyzed. RESULTS:There were no significant differences in the plasma concentra-tion of norvancomycin by microbiological method and HPLC(y=0.992 7x+0.155 8,r=0.997 6)(P>0.05). CONCLUSIONS:Both microbiological method and HPLC are more effective and reliable for the plasma concentration detection of norvancomycin. The hospi-tals can choose corresponding method according to their condition when determining plasma concentration of norvancomycin.

OBJECTIVE:To study the mechanism of histone deacetylase inhibitor RGFP109 in reversing resistance of glioma U251 cells. METHODS:TR/U251 cells resistance to temozolomide(TMZ)was extrablished. The test was divided into normal con-trol group,TMZ group(40 μmol/L)and TMZ(40 μmol/L)+RGFP109(0-120 μmol/L)different concentrations groups. After 24 h of adding into related medicines,CCK-8 was used to detect the cell survival rate and calculate the half inhibitory concentration (IC50). TUNEL and Annexin V/PI were used to detect the cell apoptosis in normal control group,TMZ group and TMZ+RGFP109 (42μmol/L)group. Immunoblotting was used to detect the O6-methyl guanine-DNA methyltransferase(MGMT),Survivin,B lym-phoma 2(Bcl-2),B lymphoma xL(Bcl-xL)protein expression;and gel migration test was used to detect the p65 acetylation level and its binding capacity with κB-DNA. RESULTS:Compared with normal control group,cell survival rate in TMZ+RGFP109 dif-ferent concentrations groups was obviously decreased (P<0.05),showing a concentration-dependent manner. When the RGFP109 concentration was 42 μmol/L,the sensitivity of TMZ to TR/U251 cells was the same with U251 cells. Compared with normal con-trol group,MGMT,Survivin,Bcl-2,Bcl-xL protein expressions in cells of TMZ groups were enhanced(P<0.01);p65 acetyla-tion level had no obvious changes,while the binding capacity of p65 and κB-DNA was strengthened (P<0.01). Compared with TMZ group,MGMT,Survivin,Bcl-2,Bcl-xL protein expressions in cells of TMZ groups were weakened(P<0.01);p65 acetyla-tion level was enhanced (P<0.01);and the binding capacity of p65 and κB-DNA was weakened (P<0.01). CONCLUSIONS:RGFP109 can reverse the resistance of U251 cells to TMZ by down-regulating the anti-apoptotic protein expressions adjusted by transcription factorκB(NF-κB)and weakening the binding of p65 andκB-DNA.

Objective: To explore change of hemoglobin (Hb) concentration, the relationship between anemia and left ventricular function and the influence of anemia on prognosis in patients with diastolic heart failure (DHF). Methods: According to NYHA classification, a total of 176 DHF patients were divided into class Ⅱ group (n=78), class Ⅲ group (n=50) and class Ⅳ group (n=48), then Hb level and morbidity rate of anemia were analyzed in each group. According to diagnostic standard of anemia, patients were divided into anemia group (n=58, , occupied 33.0%) and non anemia group (n=118, occupied 67.0% ). Left ventricular diastolic function, mortality rate and rehospitalization rate during follow-up were compared and analyzed between two groups. Results: Along with cardiac function class rose (from class Ⅱ to class Ⅳ), Hb level showed a decreasing trend [(130±6) g/L vs. (108±4) g/L vs. (96±12) g/L], while morbidity rate of anemia gradually rose (8.97% vs. 36.0% vs. 68.8%), P<0.05 all in anemia group；Compared with non-anemia group, there were significant rise in percentages of patients with coronary heart disease (55.1% vs. 65.5%), levels of creatinine [(87.6±39.2) μmol/L vs. (113.7±59.8) μmol/L] and N terminal pro B type natriuretic peptide [NT-proBNP, (578.0±136.7) pg/ml vs. (886.0±174.8) pg/ml], and early-diastolic peak velocity deceleration time [(137±15)ms vs. (196±13)ms], and significant reduction in mitral early/late diastolic peak flow velocity [E/A, (0.87±0.32) vs. (0.62±0.29)], P<0.05 all. Compared with non-anemia group, there were significant rise in mortality rate (9.3% vs. 20.7%) and rehospitalization rate (18.6% vs. 32.8%) in anemia group during follow-up, P<0.05 all. Conclusion: DHF patients often complicate with anemia. Along with heart failure aggravates, their morbidity rate of anemia rises, and anemia may aggravate cardiac diastolic dysfunction. Mortality rate and rehospitalization rate rise in DHF patients complicated with anemia.

Objective Investigate the frequency of loss of heterozygosity (LOH) at chromosome arm the short arm chromosome 3p14,25 in the serum DNA from ovarian cancer and its clinical application Methods Thirty eight ovarian cancer serum samples with 18 corresponding tumor tissues and 8 benign ovarian tumors were obtained,and DNA samples extracted from serum and tissue were examined for 3p14,25 LOH by using of polymerase chain reaction with four polymorphic microsatellite markers (D3S1029, D3S1228, D3S1300, D3S1481) Results Matched serum and tissue DNAs from 18 ovarian cancer patients showed significant concordance of 3p14,25 LOH ( P

Calcifying epithelial odontogenic tumor (CEOT) is a rare benign epithelial tumor of odontogenic origin. CEOT is a benign but a locally infiltrative tumor. CEOT has two clinical variants: intraosseous (central) CEOT and extraosseous (peripheral) CEOT. The peripheral type is rare. In this paper, we report two cases of CEOT. The diagnoses of the cases were verified by histopathology. This study aims to explore the clinical and imaging appearances of CEOT and improve the understanding of the disease.
Humans ; Odontogenic Tumors ; Skin Neoplasms

To explore the protective effects of Huqi extractum, a compound Chinese herbal medicine, on salivary glands against radiation in Wistar rats.

Objective To investigate the bactericidal mechanism of electrolyzed oxidizing water (EOW) against Pseudomona aeruginosa (P.aeruginosa).Methods Bactericidal mechanism of EOW against P.aeruginosa was studied through intracellular protein leakage,nucleic acid,and cell membrane calcium ion permeability,2 ％ glutaraldehyde was used as positive control group,and normal saline (NS) was used as negative control group.Results The killing rates of EOW and 2％ glutaraldehyde to P.aeruginosa were both＞99.99％ with 30-second contact time,and 100.00％ with 60-second contact time.After 60-second contact with EOW,NS,and 2％ glutaraldehyde,the protein leakage of P.aeruginosa detected by bicinchoninic acid (BCA) were (96.00 ± 7.42),(94.15 ± 7.49),and (216.97 ± 10.35)μg/mL,respectively,difference was significant(F =613.20,P＜0.01),2％ glutaraldehyde group was higher than EOW group and NS group;protein leakage did not change with the increase of contact time(all P＞0.05).Electrophoretogram of random amplified polymorphic DNA showed high intensity dense band between 500-1000 Kb in EOW group and NS group,while 2％ glutaraldehyde group was without amplified bands.The fluorescence intensity of calcium ion of EOW group and 2％ glutaraldehyde group were both lower than that of NS group.Conclusion Bactericidal mechanism of EOW may be due to the damage of membrane permeability of P.aeruginosa,which causes Ca2+ leakage,but fails to cause protein leakage,the damage to nucleic acid is not obvious,DNA may not be a bactericidal target of EOW.

Background and purpose:It has been confirmed that homozygous deletion of p16/p15 gene and its co-deletion of p16/p15 genes were related to the occurrence, progress and prognosis of epithelial ovarian cancer. However, the mono-deletion and co-deletion of the genes has been detected with tissue but not in serum DNA of the epithelial ovarian cancer. In this article, we studied the relationship between homozygous deletion of p16/p15 gene and its co-deletion of p16/p15 genes in serum DNA of the epithelial ovarian cancer.Methods:Primers were used to amplify exon 2 of p16 and exon 2 of p15 gene by polymerase chain reaction. Homozygous deletions of the p16, p15 and co-deletion of p16/p15 genes were studied in either serum DNA of 165 patients with epithelial ovarian cancer, their counterpart lymphocytes DNA, serum DNA of 25 benign ovarian cyst or of 15 health donors.Results:The homozygous deletion rates of either p15 or p16 gene were 27.9%(46/165)and 27.3%(45/165)serum DNA in the patients with epithelial ovarian cancer respectively, while the co-deletion rate of p16/p15 genes was 24.2% (40/165). However, the deletions of p15/p16 genes and its co-deletion were not found in serum DNA of the counterpart lymphocytes,25 benign ovarian cyst and 15 health donors (The P values were 0.000、0.000 and 0.000 respectively). The deletions of either p15 or p16 gene for the patients with stage Ⅰ~Ⅱ were 14.3%(5/35) and 11.4%(4/35), 33.3%(25/75) and 32.0%(24/75) for the patients with stage Ⅲ, 29.1%(16/55) and 30.9% (17/55) for stage Ⅳ, respectively. Although there was no significant differences among the groups, the deletion of p15 and p16 genes in the patients with advanced stage were higher than that with early stage. The deletion was not found to be associated with histopathology of epithelial ovarian cancer.Conclusions:Homozygous deletions of the p16, p15 genes and its co-deletion of p15/p16 genes were commonly found in the serum DNA of epithelial ovarian cancer and might be associated with clinical stage of the disease. It was suggested that detection with serum DNA may be used as a micro-invasive approach and the deletion of genes might served as biological markers for the development and prognosis of the patients with epithelial ovarian cancer.